Disconnected: Object reference not set to an instance of an object. at Client.CreateOrUpdtaeEntity (ProtoBuf.Entity info, System.Int64 size) [0x00000 in <00000000000000000000000000000000>:0
Misspelt in the oxide build causing crashes for clients in some instances. 

CreateOrUpdtaeEntity

That isn't something from Oxide and I don't see that typo in the game either, nor would a typo cause the game to crash as that method would have to exist and would still be called.

I'd suggest checking your full log for the actual issue.

We were missing core files from Umod or the game, but thanks resolved now.